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Unsupervised classification of eclipsing binary light curves through k-medoids clustering

Author

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  • Soumita Modak
  • Tanuka Chattopadhyay
  • Asis Kumar Chattopadhyay

Abstract

This paper proposes k-medoids clustering method to reveal the distinct groups of 1318 variable stars in the Galaxy based on their light curves, where each light curve represents the graph of brightness of the star against time. To overcome the deficiencies of subjective traditional classification, we separate the stars more scientifically according to their geometrical configuration and show that our approach outperforms the existing classification schemes in astronomy. It results in two optimum groups of eclipsing binaries corresponding to bright, massive systems and fainter, less massive systems.

Suggested Citation

  • Soumita Modak & Tanuka Chattopadhyay & Asis Kumar Chattopadhyay, 2020. "Unsupervised classification of eclipsing binary light curves through k-medoids clustering," Journal of Applied Statistics, Taylor & Francis Journals, vol. 47(2), pages 376-392, January.
    • Handle: RePEc:taf:japsta:v:47:y:2020:i:2:p:376-392
    DOI: 10.1080/02664763.2019.1635574
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